B737 flight crew reported a track deviation resulted when they were distracted by a wake turbulence ...

Attributes
ACN	1545907
Time
Date	201805
Local Time Of Day	1201-1800
Place
Locale Reference	IAH.Airport
State Reference	TX
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Descent
Route In Use	STAR DRLLR FIVE RNAV
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	Descent
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 200 Flight Crew Total 26000 Flight Crew Type 16000
Person 2
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 57
Events
Anomaly	Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types Inflight Event / Encounter Wake Vortex Encounter

Narrative:

As we were heading toward mport on the drllr 5 arrival; we were given the RNAV approach to 26R (we had the ILS 26R in the FMC). We encountered what we thought might be wake turbulence twice within a minute; which distracted us somewhat. As we entered the approach in the FMC we inadvertently reentered the STAR and brought mport to the top; which we had just; passed; which caused the aircraft to begin a turn toward mport; which was behind us. The first officer (flying pilot) disconnected the autopilot and began a turn back to the course. At this point; we were almost to drllr and the intercept angle was too large. ATC asked where we were headed and I replied that we had deviated from the course while we were programming our FMC and that we were headed back on course. At this point; the controller began to vector us to the downwind leg. He did not query us further; changed frequency and flight continued to visual approach and landing.

Original NASA ASRS Text

Title: B737 flight crew reported a track deviation resulted when they were distracted by a wake turbulence encounter on arrival into IAH.

Narrative: As we were heading toward MPORT on the DRLLR 5 arrival; we were given the RNAV approach to 26R (we had the ILS 26R in the FMC). We encountered what we thought might be wake turbulence twice within a minute; which distracted us somewhat. As we entered the approach in the FMC we inadvertently reentered the STAR and brought MPORT to the top; which we had just; passed; which caused the aircraft to begin a turn toward MPORT; which was behind us. The First Officer (flying pilot) disconnected the autopilot and began a turn back to the course. At this point; we were almost to DRLLR and the intercept angle was too large. ATC asked where we were headed and I replied that we had deviated from the course while we were programming our FMC and that we were headed back on course. At this point; the Controller began to vector us to the downwind leg. He did not query us further; changed frequency and flight continued to visual approach and landing.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

B737 flight crew reported a track deviation resulted when they were distracted by a wake turbulence encounter on arrival into iah.